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Key findings

  • The highest monthly average temperature in Port Allen for August is 82.2 degrees
  • The lowest monthly average temperature in Port Allen for January is 52.8 degrees
  • The most monthly precipitation in Port Allen occurs in December with 9.3 inches
  • The air quality index in Port Allen is 10% better than the national average
  • The pollution index in Port Allen is 29% better than the national average

Compare Port Allen, LA Weather

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      Port Allen Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January44°F65°F53°F5.2"
      February45°F66°F54°F5.0"
      March51°F74°F62°F3.1"
      April58°F80°F68°F3.2"
      May66°F86°F75°F5.7"
      June72°F92°F81°F3.0"
      July74°F92°F82°F5.2"
      August74°F93°F82°F7.9"
      September70°F89°F78°F6.9"
      October58°F81°F69°F5.6"
      November49°F73°F59°F2.7"
      December45°F66°F54°F9.3"

      Port Allen air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexPort AllenLouisianaNational
      Air quality index4510650
      Pollution index1,932,4202,526,4752,726,193

      Port Allen air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality224
      Days with moderate air quality132
      Days w/ poor A.Q. for sensitive groups9
      Days with unhealthy air quality0

      Port Allen air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.030%
      Carbon Tetrachloride0.060%
      Lead0.000%
      Mercury0.000%

      Average monthly Port Allen temperature with heat index

      Port Allen monthly precipitation with daily maximum

      Port Allen monthly snow depth with daily maximum

      Port Allen monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Shenandoah, LA19,9994510.0%
      Brownfields, LA5,0254510.0%
      Plaquemine, LA6,9204510.0%
      Brusly, LA2,6754510.0%
      Grosse Tete, LA6944510.0%
      Port Allen, LA5,1234510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Avondale, LA5,1234510.0%
      Glencoe, AL5,1224314.0%
      Chestertown, MD5,122468.0%
      Three Points, AZ5,124476.0%
      Flanders, NY5,1254118.0%
      Port Allen, LA5,1234510.0%
      Source: The Port Allen, LA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.